Challenge your understanding of probability by trying to create the perfect Tic-Tac-Toe Dice-O-Rama board. You get to place the numbers 2 through 12 on a standard Tic-Tac-Toe board, then roll a pair of standard dice - if their sum is on your board, you can mark off one spot. As soon as you get three in a row (vertical, horizontal, or diagonal), you win!